Loose-leaf binder.



-N0. 852,084. PATENTED APR. 30, 1907.'

J. STRANG.

LOOSE LEAF BINER.

APPLICATION FILED JAN.21,1907.

2 SHEETS-SHEBT l,

Figi. Mg. z. .f7/g55 No. 852,084. PATENTED APR. 30, 1907. J. STRANG.

LOOSE LEAF BINDER.

APPLIUATION FILED JAN.21, 1907.

ZSHEBTS-SHBET Elt 1 6 lil [mj Fig; @gif T all whom/,it may concern,.-

UNITED STATES 4PATENT OFFICE.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed January 21, 1907. Serial No. 353,174.

Be it known that I, JAMES STRANG, a citizen of the United States, residing in the borough of Brooklyn, city of New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Loose- Leaf Binders, of which the following is a specification..

My improvements relate to the class of binders designed for the protection of loose leaves or signatures adapted for use in the ordinary type-writingmachine--the object being to afford a comparatively simple construction and arrangement of parts in `which provision is made for inserting or removing sheets at either the right or left sides of the back in which the operation of locking or unlocking the sides of the binder for the inser- V tion or removal of sheets is expedited and rendered. more convenient; and in which provision is made for rendering the binding permanent as hereinafter described and claimed specifically.

In the accompanying drawings, Figure' 1, is an elevation of the parts adjoining the 'oint of the left hand cover with the sheet ars locked in position Fig. 2. is a similar view with the bolt slide withdrawn from the lock tube and shown in elevation in Fig. 3; Fig. 4, is an end view upon an enlarged scale of the back portion of the binder, closed Figs. 5 and 6, are respectively sections taken upon plane of li'nes 5 5- and 6-6- Fig. 1, on the same scale as Fig. 4; Fig. 7, is a central longitudinaly section of the left hand lock tube; Fig. 8, is an elevation of the inner side of the back of the binder, the leaves being omitted and the sheet bars being locked in position; Fig. 9, is a similar view showing the sheet bars released from the left' hand lock tube; Figs. 10 and 11, are sections upon an enlarged scale of one end of one of the lock tubes and of one of the bolt slides showing more clearly the means for permanently locking the slide within the tube; Figs. 12 and i3, are elevations in Idetail of one of the sheet bars; Fig. 14, is a section taken upon plane of line 14--14-y Fig. 8.

C, C, represent the usualside boards or covers, united to and articulating upon the back B, at the joints b, b, in a manner well known in the art. Each cover C by reference consists of anouter sheet c, unite to the back B, at the joint b, oigan intermediate formed by doubling sheet c', and of an inner sheet c2, said sheets being formed of card board or other suitable material in the usual manner. interposed between the inner edges of the sheets c and c2, is a metallic plate M, the general outline of which is shown in dotted lines in Figs. 1 and 2, and shown in cross section in Fig. 5. This plate M is formed with overlapping tongues m, m, which pass through the intermediate sheet c, and are doubled over thereon and between it and the outer sheet c, of the cover C as shown in Fig. 6,-the main object of this construction being to insure a substantial, rigid foundation and supportv for the lock tube m. This lock tube `m/, is over the edge of the plate M which isto protrude from the inner edge of the cover when incorporated therewitl1,-tl1e tube consists of a flat channel having parallel sides between which the bolt slide S, fits snugly. `It is'to be noted particularly in this connection that the above described construction is duplicated on each cover, and that each flat lock tube or channel protrudes from its cover in the same general plane as the cover itself. A back of relatively small ornormall size and shape may thus bey used as compared with other binders of this class,fsince the lock tubes m', occupy the side concavities b', b', of the back when' the binder is closed, as will be seen by reference to Figs. 4, 5 and 6, thus economizing space and improving the ap earance of the binder as a Whole, since an or inary book or ledger back may be used as shown in the drawings in contradistinction to the box backs of special construction usuall resorted to in devices of this character. if feature of importance where the eventually to be rendered ermanent, as hereinafter set forth, since t e device then constitutes, to all .intents and purposes, a simple book of reference of ordinary shape and appearance. I

Any desired number of sheet bars D may be used,-three bein shown in the drawings, the lock tubes each being formed with a corresponding number of notches or recesses m2,

binding is fm2, for the reception of the ends of the said lsheet bars D, said ends being formed .with bolt holes d, for the reception of the bolt4 tongues s', s2, s3,- on the bolt slide S. vlThe sheet bolts D are curved slightly to conformi lsomewhat to the curvature of the back B,

his is a IOO similar construction to those herein used in f conjunction with my right and left hand lock ,to be attended to at a time, a coni tubes is` shown in LettersPatent No. 789,185 dated May 9th, 1905, and l do not seek to cover such construction broadly, the distinguishing feature in the present case consisting in making the bolt tongues s', s2, s3, successively of less length, so that the rst s', will first engage the bolt hole d, inthe first bar D, the second bolt tongue s2, next entering the bolt hole d, in the second sheet har D, and so on. That is to say, the sheet bars are locked independently and important feature in actual use since it is a comparatively dilicult and tedious operation to lock all the bars D simultaneously owing to the difficulty of setting and maintaining them in perfect alinement, whereas by my improved construction only one sheet bar has aratively easy and simple task which may e accomplished without the exercise of much skill or patience., Furthermore, i use one of my special form of bolt slides ,S in conjunction with each of my lat lock tubes, so'that sheets P may be inserted or removed with equal .facility from either side of the binder. Thus sheets removed from the front or left hand side may be type-written and then replaced the binder on the rear or right hand side of the binder, so that the pages will be compiled successively in a convenient and consistent manner, without the necessity of removing or re-arranging the gaes after they have been type-written ank filed. lt further enables me to place on the market a full boolni. e., one having the maximum number of sheets or signatures Whereas heretofore, so far as l am aware, such binders have been accessible for the insertionI or removal of sheets on one side only, and have been built up' bythe addition oi', sheetsinde endently stored, which is an objectionable eature in many respects, especially since it renders the binder dependent on an' inde endently stored supply of loose-sheets'. In act, in so far as devicevis concerned the term loose sheetswould hardly ap ly since the book is complete init'self, an the sheets are simply removable and interchan cable until such time9 as the book is comp eted and permanently locked. This Iv believe to be a distinguishingfeature of my invention and one that renders it of practicalimportance over. the` prior state OfA the art in a commercial sense.

Eachbolt slide S is `formed with ahole or recess s'i coinciding in position, when the fully lnserted in the tube m', with a,

slide is tongue m3, cut in one side of said flat tube fm. When the book is complete this tongue is successively. This is an seance forced into the hole s4, in the slide S, as Will be understood particularly by reference to Figs. 10 and l1. Under ordinary conditions of use the tongue m3, is flat and even with the side wall out of which it is formed as in Fig. 10. it will be seen by reference to Fig. il, that the depression or upsetting of the tongue m3, eectually and positively locks the slide S against longitudinal movement in either direction.

rl`he outer end of each bolt slide S is formed with a lateral odset or shoulder S5, to facilitate the manipulation of the slide before it is locked permanently in position as above, and thereafter to act as a guard to prevent tampering with the tongue m3, after it is forced into the hole s4, as will be understood by reference to Fig. l1. That is to say, the lateral shoulder S5, projecting on the side on which said tongue m3, is situated prevents the insertion of any cutting tool or other implement whereby said tongue could be cut or otherwise be tampered with.

What l 4claim as my invention and desire to secure by Letters Patent is,

. 1. In a binder of the character described, the combination with the covers and erfo rated sheets,l of a lock tube attache to a cover and formed with recesses for the reception of the ends or sheet bars, said sheet bars passing through said erforated sheets and formed with end ve orations, and a bolt slide in said hat locali tube, said bolt slide being formed with bolt tongues arranged to successively engage With the bolt holes in sheet bars, for the urpose described.

2. In a binder of) the character designated, the combination with the hack and covers and with the perforated sheets, of a plurality of sheet bars passing through said perforated sheets each bar being rormed with a bolt hole at each end., two flat lock tubes one attached tofand projecting from each of the covers in the same general plane as that of the cover, eachI of said lock tubes being formed with recesses for the reception of the ends of the sheet bars and with a depressible tongue on one side wall, and two bolt slides, one in each of said flat lock tubes, saidslides being each formed with bolt tongues for engagement with the bolt holes in the sheet bars and a slot or depression.communicating with the depressible tongue in the side of the lock tube in which it is inserted, whereby the sheets ma be removed from one side ofthe binder an replaced at the other side thereof, and whereby when the book is completed, the` bolt slides mav be permanently locked in position in the loch tubes for the purpose described. A 3. Ina binder ofthe charactrdesignated, the combination with 'the back and covers andwith the perforated sheets, of a plurality of sheet hars assing through said perforated sheets, each IOO j ar being formed with' a bolt 130i hole at each end, two Het lock tubes one atranged to engagegsuccessively one in advance tached to and projecting from each of the of the other, the bolt "holes in the sheet bars, 1o cvers in the szme gene'a pne gs thlxt of for the purpose deecrbed.

t e cover, eac oi' sai oc tu es eing formed with recesses for the reception of the JAMES SPRANG' ends of the sheet bars, and two bolt slides Witnesses:

one in each of said Hat lock tubes, each ofl D. W. GARNER,

said slidesbeing formed With bolt tongues arl GEO. WM. MIATT. 

